bboltn

class StarShip {
  int warpNacelles;
  String name;
  
  StarShip(this.name, this.warpNacelles);
  
  // example of a synchronus generator
  // We'll show an async generator later.
  Iterable<int> engage(int warpFactor) sync* {
  	int currentWarp = 1;

bboltn

class StarShip {
  double deckCount; // number of decks on the ship
  int phaserCount;
  double warpNacelles;
  String name;
  @override
  String toString() => 'Ship: Name: $name, Deck: $deckCount, Phaser: $phaserCount, Nacelles: $warpNacelles';
}

// any function that wants to build star ships, must conform to this signature

bboltn

import 'dart:async';

Stream<String> timeTravelers() async* {
  	var travelers = ['Michael Burhnam', 'Sylvia Tilly', 'Saru', 'Gabrielle Burnham'];
    
    for(var traveler in travelers) {
      await new Future.delayed(Duration(seconds: 2));
      if (traveler == 'Gabrielle Burnham') throw 'Time crystal broke! $traveler sent to wrong year!';
      // async generator
      yield traveler;

bboltn

import 'dart:async';

Future sendToFuture(int year, String person) async {
  return new Future.delayed(Duration(milliseconds: year), () {
    print('>> ' + person + ' has arrived in the year $year');
  });
}

Future<int> whatYearIsIt() async {
  return new Future.delayed(Duration(milliseconds: 1500), () {

bboltn

// give behavior to classes with mixins
mixin Phasers {
  void power() => print('Phaser set to stun');
  void blast() => print('phaser blast');
}

mixin PhotonTorpedo {
  void launch() => print('photon torpedo launch');
}

bboltn

// optional named parameter
String formatter1(String val, {bool html = false}) => html ? '<span>$val</span>' : val;

// optional positional parameter
String formatter2(String val, [bool html = false]) => html ? '<span>$val</span>' : val;

main() {
  // inline functions
  galacticCoord() => 'milky way';
  print(galacticCoord());

bboltn

void main () {
  
  //numbers
  int warpFactor = 2;
  print('Warp: $warpFactor');
  
  // strings
  String name = 'Enterprise';
  print('StarShip: $name');
  

bboltn

class TvShow  {
  String title;
  String producer;
  String director;
  Set<String> actors;
  int length;
  
  @override
  String toString() => 'TvShow: title: $title';
}

bboltn

// Mission...
// T is the value type
class Mission<T> {
  T missionType;
  String start;
  String destination;
  
  // generic method
  T getMission() => missionType;
  

bboltn

class RedAlertException implements Exception {
  String cause;
  RedAlertException(this.cause);
}

class YellowAlertException implements Exception {
  String cause;
  YellowAlertException(this.cause);
}